I'm curious what did the Free French, Dutch, Belgian and other national Forces carry after the fall of their various countries?

They were equipped with whatever they could get their hands on, literally. Capture weapons from dead Germans, or captured arms from German supply depots. They were equipped with M1 Garands, the Dutch particularly were given Garands, etc. I'm sure other forces were supplied with the Lee-Enfield, those more expert than I can speak to the British arms given to the free forces.

For that matter, the Lee-Enfield in the video was manufactured here in the USA during WWII by the Savage corporation, as part of the American "lend lease" program, for lack of better way to explain it simply. The rifle has "US Property" stamped on it, but were shipped directly over to equip British Empire forces.

Master the trigger and the sights and ... the accuracy is actually quite good, most of the time.

But, for $120 and change, where else can you get an authentic WWII era battle rifle that shoots relatively inexpensive ammo that you know was one of the rifles, or at least one of the kind of rifles, the Soviets used to defeat the Nazi powers and help bring down Nazi Germany during WWII.

Plus, if you get a M44 Carbine version of the 91/30 you won't get more "bang" for your buck anywhere!

Buy directly from the Civilian Marksmanship Program, where you will have the best rifles and assurance of their function and quality. You can pick up a nice "service grade" still for around $700, including shipping.